数学题目求解~.注意过程~.要交作业滴= =.1.如图1,在△ABC中,AB>AC,M是BC的中点,且MD⊥BC,∠A的平分线与MD相交于点D,DE⊥AB于点E,DF⊥AC于点F.求证:BE=CF.2.如图2,△ABC中,∠C=Rt∠,AC=BC,AD平分∠CAB交BC

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